.header{
    width: 100%;
    height: 30px;
    position: fixed;
    top: 0;
    left: 0;
    padding: 5px 10px;
    background-color: #f5f8f9;
    text-align: center;
    vertical-align: middle;
}
.header a{
    margin: 0 10px;
    color: black;
    text-decoration: none;
}
.header a:hover{
    color:deepskyblue;
    text-decoration: none;
}

.alarm{
    color: red;
    margin-left: 7px;
}